Hamza.

Hamza Hussain

Full-Stack AI Developer | Building Agentic Workflows & High-Impact RAG Systems

Overview

Full-Stack Developer specializing in AI automation and RAG optimization. At Octtoppus, I engineered an IELTS-style grading portal using LangGraph self-correction loops and dropped query latencies from hours to seconds. Proven track record of operational impact, including a 70% reduction in processing time for legacy system migrations. Passionate about RAG, agentic workflows, and scalable backend architecture.

Lahore, Pakistan

Experience

Sep 2024 – Jul 2026

WORK

Full-Stack AI Developer

Octtoppus

HRMind RAG Assistant: Developed a document-grounded AI assistant answering policy queries in natural language, dropping response latencies from hours down to seconds. Automated Grading Portal: Built an IELTS or PTE style language testing portal using DeepSeek and LangGraph self-correction loops to provide instant, structured evaluation reports. RAG Optimization: Tuned retrieval performance with hybrid semantic keyword search and smart chunking, significantly dropping latency during active client proof of concepts. Team and Enterprise Delivery: Directed task scoping and code reviews for a regional real estate platform while building robust RBAC and payroll features for an educational multi-region CRM.

•HRMind RAG Assistant: Developed a document-grounded AI assistant answering policy queries in natural language, dropping response latencies from hours down to seconds.

•Automated Grading Portal: Built an IELTS or PTE style language testing portal using DeepSeek and LangGraph self-correction loops to provide instant, structured evaluation reports.

•RAG Optimization: Tuned retrieval performance with hybrid semantic keyword search and smart chunking, significantly dropping latency during active client proof of concepts.

•Team and Enterprise Delivery: Directed task scoping and code reviews for a regional real estate platform while building robust RBAC and payroll features for an educational multi-region CRM.

Key Achievements

→Developed a real-time push notification system using NestJS and Socket.IO for the HRM platform, eliminating manual follow-ups and speeding up internal communication.

→Eliminated manual follow-ups for the HR team through real-time notification triggers.

→Dropped response latencies from hours down to seconds for HR policy queries.

→Significantly dropped latency during active client proof of concepts through RAG optimization.

RAGDeepSeekLangGraphHybrid SearchRBACCRMNestJSSocket.IO

Oct 2023 – Sep 2024

WORK

Full-Stack Developer

A&N Trading

Legacy Overhaul: Architected a custom Next.js and PostgreSQL platform replacing a legacy Access tool, reducing manual operational processing time by roughly 70%. Automation Modules: Rolled out digital attendance, inventory spending patterns, and scrap vendor management modules, eliminating paper tracking and scattered spreadsheets. Live Dashboards: Designed real-time gate pass approval flows and financial analytics interfaces, bringing turnaround times down to minutes and giving executives same-day cash flow clarity. Data Migration: Executed complete extraction and migration from Access to a normalized PostgreSQL instance with comprehensive audit trail schemas and zero data loss.

•Legacy Overhaul: Architected a custom Next.js and PostgreSQL platform replacing a legacy Access tool, reducing manual operational processing time by roughly 70%.

•Automation Modules: Rolled out digital attendance, inventory spending patterns, and scrap vendor management modules, eliminating paper tracking and scattered spreadsheets.

•Live Dashboards: Designed real-time gate pass approval flows and financial analytics interfaces, bringing turnaround times down to minutes and giving executives same-day cash flow clarity.

•Data Migration: Executed complete extraction and migration from Access to a normalized PostgreSQL instance with comprehensive audit trail schemas and zero data loss.

Key Achievements

→Reduced manual operational processing time by roughly 70%.

→Eliminated paper tracking and scattered spreadsheets.

→Brought turnaround times down to minutes for gate pass approvals.

→Achieved zero data loss during migration from Access to PostgreSQL.

Next.jsPostgreSQLMicrosoft Access

Aug 2023 – Oct 2023

WORK

Software Development Intern

Webstack Academy

Collaborated asynchronously with cross-border engineering teams to deliver a full-stack food delivery application using Next.js, Redux, Node.js, and MongoDB. Designed and integrated core REST API paths for secure order routing and user token validation.

•Collaborated asynchronously with cross-border engineering teams to deliver a full-stack food delivery application using Next.js, Redux, Node.js, and MongoDB.

•Designed and integrated core REST API paths for secure order routing and user token validation.